Question
The diagonal of a rectangle is 53 cm, and its area is
1260 cm². What is the perimeter (in cm) of the rectangle?Solution
Let the length of the rectangle =x and width To be Y. ATQ- x × y =1260 x2+y2=53×53=2809. (x+y)2= x2+y2+2xy 
X+y =73 Perimeter of rectangle =2(x+y) =2×73=146. 
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